Hi Valentine,
Your Makefile did not work for me.
To make teh things running, just execute the following commands
to build your executable
rootcint -f dict.C -c MyClass.h+
g++ -g `root-config --cflags` -c dict.C MyClass.C
g++ -g -Wl,-soname,MyClass.so -shared dict.o MyClass.o -o MyClass.so
g++ -o crt crt.C `root-config --cflags --libs` MyClass.so
I have modified one line in your program to select split=1
run crt. This produces tree.root
In a Root session, you can then do:
root > TFile f("tree.root");
root > T->Draw("fX")
Rene Brun
On
Fri, 14
Nov 2003, Valentine
Kouznetsov wrote:
> Thanks to Rene's help I'm able to embed my ROOT-less class into ROOT Tree
> (the class without any knowledge of ROOT). But in order to read that tree and
> do some stuff I need to load my dictionary into root.
>
> My question now is how to embed this dictionary to the tree in order to allow
> loading my tree and accessing my class object without loading object's
> dictionary.
>
> What I found that it's possible if I add ClassDef into my class, BUT
> my class is ROOT-less and it will need to know where to get this definition.
> I don't want to include any ROOT header file into my class definition, but
> I would expect that can be done in the dictionary itself.
>
> I'm attaching my class, macros, etc. to this Email.
> Here the definitions:
> MyClass is ROOT-less aware class
> crt.C is a main program to create a root tree with this class
> I compile dictionary/shared library using Makefile
> and executable to create tree using
> g++ -o create_tree -I$ROOTSYS/include crt.C -L$ROOTSYS/lib -lCore -lTree
> -lCint -lm -lstdc++ -ldl MyClass.o mydict.o
>
> So, to be clear in order to have access to my tree with dictionary I need to
> load the macro
> gSystem->Load("libMy.so");
> TFile f("tree.root");
> TTree *T = (TTree*)f.Get("T");
> T->Print();
>
> and I would like to avoid loading my libMy.so and want to embed my dictionary
> into tree itself and generate this tree with my dictionary.
>
> Thank you,
> Valentine.
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